Journal ArticleDOI
A Survey on Neutral-Point-Clamped Inverters
TLDR
The basic operation and the most used modulation and control techniques developed to date of neutral-point-clamped inverters are presented and some technological problems such as capacitor balance and losses are presented.Abstract:
Neutral-point-clamped (NPC) inverters are the most widely used topology of multilevel inverters in high-power applications (several megawatts). This paper presents in a very simple way the basic operation and the most used modulation and control techniques developed to date. Special attention is paid to the loss distribution in semiconductors, and an active NPC inverter is presented to overcome this problem. This paper discusses the main fields of application and presents some technological problems such as capacitor balance and losses.read more
Citations
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Proceedings ArticleDOI
EMTP model of a bidirectional multilevel solid state transformer for distribution system studies
TL;DR: In this paper, a model for a MV/LV bidirectional solid state transformer (SST) for distribution system studies has been presented, where a multilevel converter configuration is used in the MV side for voltage and current harmonic reduction.
Journal ArticleDOI
Capacitor Lifetime Extension in a Hybrid Active Neutral-Point-Clamped Inverter With Reduction of DC-Link Ripple Current and Common-Mode Voltage
TL;DR: In this paper, the authors proposed a reduction method for DC-link ripple current and common-mode voltage (CMV) in a hybrid active neutral-point-clamped (ANPC) inverter.
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An Innovative Bidirectional DC-AC Converter to Improve Power Quality in a Grid-Connected Microgrid
TL;DR: The relevance of an innovative topology based on sinusoidal waveforms from the generation of sine half-waves is pointed out, which has the feasibility to improve the power quality of the output signals in terms of total harmonic distortion.
Proceedings ArticleDOI
Experimental validation of a thirteen level H-bridge photovoltaic inverter configuration
TL;DR: In this paper, the authors present a single-phase thirteen level inverter control method employing semiconductor power devices for photovoltaic applications, which is based on a simple H-bridge inverter structure and provides accurate voltage control and excellent efficiency.
Proceedings ArticleDOI
A Four-Level Single-Phase Diode-Clamped Inverter with Natural DC-Link Capacitor Voltage Balance
TL;DR: New concepts of modulation are proposed to achieve more symmetrical discharging of the capacitors and to create the conditions for natural dc-link voltage balance.
References
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Journal ArticleDOI
Multilevel inverters: a survey of topologies, controls, and applications
TL;DR: The most important topologies like diode-clamped inverter (neutral-point clamped), capacitor-Clamped (flying capacitor), and cascaded multicell with separate DC sources are presented and the circuit topology options are presented.
A New Neutral-Point-Clamped PWM Inverter
TL;DR: In this article, a neutral-point-clamped PWM inverter composed of main switching devices which operate as switches for PWM and auxiliary switching devices to clamp the output terminal potential to the neutral point potential has been developed.
Journal ArticleDOI
A New Neutral-Point-Clamped PWM Inverter
TL;DR: The neutral-point-clamped PWM inverter adopting the new PWM technique shows an excellent drive system efficiency, including motor efficiency, and is appropriate for a wide-range variable-speed drive system.
Journal ArticleDOI
Multilevel Voltage-Source-Converter Topologies for Industrial Medium-Voltage Drives
TL;DR: This paper covers the high-power voltage-source inverter and the most used multilevel-inverter topologies, including the neutral-point-clamped, cascaded H-bridge, and flying-capacitor converters.
Journal ArticleDOI
Pulsewidth modulation-a survey
TL;DR: The author provides a guideline and quick reference for the practicing engineer to decide which methods should be considered for an application of a given power level, switching frequency, and dynamic response.